KIBU2022-04-122022-04-122021-02-08http://erepository.kibu.ac.ke/handle/123456789/4891MAT 327:Methods IenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/MAT 327:Methods IMethods IMAT 327Other